Question

我在ios 8测试版中一直在使用icloud，CloudKitAtlasAnIntroductiontoCloudKit示例项目非常有帮助。 https://developer.apple.com/library/prerelease/ios/samplecode/CloudAtlas/Introduction/Intro.html

但我想使用CKDiscoverAllContactsOperation类，我无法在任何地方找到任何示例代码，在线文档也不是很有帮助。 https://developer.apple.com/library/prerelease/ios/documentation/CloudKit/Reference/CKDiscoverAllContactsOperation_class/index.html

如果有人设法成功使用CKDiscoverAllContactsOperation，请帮助我指出正确的方向或展示如何调用它的工作示例？

我试过这个，看看我是否能从iCloud得到回复，但没有：

- (void)queryForRecordsOtherUsersInAddressBookcompletionHandler:(void (^)(NSArray *records))completionHandler {

CKDiscoverAllContactsOperation *discoverAllContactsOperation= [[CKDiscoverAllContactsOperation alloc] init];
[discoverAllContactsOperation setContainer:_container];

NSMutableArray *results = [[NSMutableArray alloc] init];


discoverAllContactsOperation.discoverAllContactsCompletionBlock = ^(NSArray *userInfos, NSError *operationError) {
    [results addObjectsFromArray:userInfos];
};


discoverAllContactsOperation.discoverAllContactsCompletionBlock=^(NSArray *userInfos, NSError *operationError){
    if (operationError) {
        // In your app, handle this error with such perfection that your users will never realize an error occurred.
        NSLog(@"An error occured in %@: %@", NSStringFromSelector(_cmd), operationError);
        abort();
    } else {
        dispatch_async(dispatch_get_main_queue(), ^(void){
            completionHandler(results);
        });

    }
};


}

用这个来打电话......

 [self.cloudManager queryForRecordsOtherUsersInAddressBookcompletionHandler:^(NSArray *records ) {
                if (records.count==0){
                    NSLog(@"Login name not found");
                    return;
                }
                //self.results= records;
                //_loggedInRecord = self.results[0];
                //NSLog(@"%@,%@",_loggedInRecord[@"lastName"],_loggedInRecord[@"firstName"]);
               // [self performSegueWithIdentifier:@"loggedInSegue" sender:self ];

            }];

我知道代码不应该做任何事情。我只是在寻找iCloud的回复。

Answer 1

这是我正在使用的。 self.container是CKContainer中[CKContainer defaultContainer]的{{1}}集。

init

Answer 2

在使用CKDiscoverAllContactsOperation操作之前，首先需要请求许可。

请使用方法requestApplicationPermission:completion:

func discoverAllContacts() {

    let container = CKContainer.defaultContainer()

    //Request for user permission
    container.requestApplicationPermission([.UserDiscoverability]) { [weak self] status, error in

        switch status {
        case .Granted where error == nil:
            let operation = self?.discoverAllContactsOperation { usersInfo in
                //do something here
            }

            if let operationExists = operation {

                //Assuming there is a NSOperationQueue property called operationQueue
                self?.operationQueue.addOperation(operationExists)

            }

        default:
            break
        }
    }
}

func discoverAllContactsOperation(completionHandler: ([CKDiscoveredUserInfo]?) -> ()) -> NSOperation {

    let operation = CKDiscoverAllContactsOperation()

    operation.discoverAllContactsCompletionBlock = { usersInfo, error in

        if error == nil {
            print("Discoverd all contacts = \(usersInfo)")
            completionHandler(usersInfo)
        }
        else {
            print("Discoverd all contacts error = \(error)")
            completionHandler(nil)
        }

    }

    return operation
}

IOS8 beta CloudKit的CKDiscoverAllContactsOperation的任何工作示例代码？

2 个答案: